DS250DF810: DS250DF810 test tool and the related guider

Oliver Ou

Part Number: DS250DF810

Hi,

In customer's system, DS250DF810 supports 100G-CR4 which follows IEEE802.3bj, in which it defines test requirement as listed below. Could you provide tool and the related guide on how to implement the request as listed below? Thanks a lot.

TX disable

PRBS9

Request transmitter to be set to 'PRESET' condition

Abs Coefficient Step Size c(1) inc c(0) hold c(-1) hold

Abs Coefficient Step Size c(1) dec c(0) hold c(-1) hold

Abs Coefficient Step Size c(1) hold c(0) inc c(-1) hold

Abs Coefficient Step Size c(1) hold c(0) dec c(-1) hold

Abs Coefficient Step Size c(1) hold c(0) hold c(-1) inc

Abs Coefficient Step Size c(1) hold c(0) hold c(-1) dec

set to c(1) zero c(0) minimum and c(-1) minimum

set to c(1) minimum c(0) minimum and c(-1) zero

Oliver Ou

over 7 years ago

0 Rodrigo Natal over 7 years ago

TI__Mastermind 19235 points

Hi Oliver,

The DS250DF810 retimer does not implement state machine logic required to handle the IEEE link training function. The local host may instead manually set the retimer Tx FIR main, pre-cursor and post-cursor tap settings via I2C writes to retimer channel registers 0x3D through 0x3F. You may refer to the TI retimer programming guide for more details related to retimer channel registers. You can request access to technical documents such as the retimer programming guide via the TI.com product page.

www.ti.com/.../DS250DF810

Cordially,

Rodrigo Natal

HSSC Applications Engineer

0 Nasser Mohammadi over 7 years ago in reply to Rodrigo Natal

TI__Guru* 93570 points

Hi Oliver,
Thanks to Rodrigo, he provided feedback on this three days ago. We are going to close this case and please either reopen or open a new case - if there is an update or a new question.
Regards,,,nasser

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DS250DF810: DS250DF810 test tool and the related guider